 
   (sesame-rdf-type->type [this]
     (str this))
-
 
   java.net.URI
   (->sesame-rdf-type [this]

  (.intValue literal))

(defmethod literal-datatype->type "http://www.w3.org/TR/xmlschema11-2/#string" [literal]
  (s (.stringValue literal)))

(defmethod literal-datatype->type "http://www.w3.org/2001/XMLSchema#dateTime" [literal]
  (-> literal .calendarValue .toGregorianCalendar .getTime))

       (->sesame-rdf-type [this]
         (LiteralImpl. str))))
  ([str lang-or-uri]
     {:pre [(string? str) (or (string? lang-or-uri) (keyword? lang-or-uri) (nil? lang-or-uri) (instance? URI lang-or-uri))]}
     (reify Object
       (toString [_] str)
       ISesameRDFConverter
